Metallic piston-rod packing



J. REBSAMEN.

METALLIC PISTON ROD PACKING.

APPLICATION FILED APR.28, 1919.

1,321,475. I Patented Nov. 11, 1919.

@1, I 8 i I JULIUS REBSAMEN, OF CHICAGO, ILLINOIS.

METALLIC PISTON -ROD PACKING.

Specification of Letters Patent.

Patented N 0V. 11, 1919.

Application filed April 28, 1919. Serial No. 293,045.

To all whom it may concern:

Be it known that I, JULIUs REBsAMnN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Metallic Piston-Rod Packings, of which the following is a specification.

My invention relates to an improvement in metallic packing for piston-rods generally, though I have more especially devised it for use on the piston-rods of ice-machine ammonia-compressors, and the like.

In the accompanying drawing, Figure l is a, broken view in vertical section showing my improved packing operatively applied to a piston-rod; Fig. 2 is a view of the pack-- ing partly in vertical section, and Fig. 3 is a top-end view of the packing shown in Fig. 2.

My improved packing comprises a series of similar members each composed of a metal cup, or ring 4 provided with an annular cylindrical neck 5 terminating in an externally beveled edge 6, these rings having their edge-portions opposite those from which the necks project internally beveled as shown at 6 to conform to and receive the beveled neck-edges when the cups are assembled in series. A ring 7 of suitable yielding material, preferably soft rubber, fits about each neck against the shoulder at its base.

The cups carrying the yielding rings are applied about a piston-rod 8 in series, whereby the beveled edge 6 of one cup enters telescopically and fits the adjacent bevel 6" in the next cup of the series which is compressed to tighten the packing in the stuffing-box 9 by the gland 10. The inner sur face of the packing contacting with the piston-rod is thus, as it should be, wholly metallic, while the endwise-compressed oondition of the packing, in its position of use, expands the yielding rings 7 against the wall of the stuffing-box to prevent leakage;

Copies of this patent may be obtained for five cents each, by addressing the and in the compressed operative condition of the confined rings 7 they tend to constrict the annular necks 5 and thereby cause them the more closely to hug the piston-rod against leakage along it.

As the inner metallic surface of the pack ing becomes worn by the working through it of the piston-rod, the wear may be readily taken up by tightening the gland to cause the beveled neck-edges 6 to enter farther into the corresponding edges 6.

I realize that considerable variation is possible in the details of construction thus specifically shown and described, and I do not intend by illustrating a single specific or preferred embodiment of my invention to be limited thereto; my intention being in the following claims, to claim protection for all the novelty there may be in my invention as broadly as the state of the art will permit.

I claim:

1. A metallic piston-rod packing comprising a series of metallic rings having annular projecting cylindrical necks telescopically entering the successive rings and surrounded by rings of yielding material confined between the successive metallic rings, said packing in its operative position presenting a wholly metallic inner surface to the piston-rod and the rings of yielding material to the stufling-box wall.

2. A metallic piston-rod packing comprising a series of metallic rings having beveled inner edges and annular projecting cylindrical necks terminating in beveled outer edges entering the beveled inner edges of said rings, and rings of yielding material surrounding said necks and confined between the successive metallic rings, said packing in its operative position presenting a wholly metallic inner surface to the piston-rod and the rings of yielding material to the stufiing-box wall.

JULIUS REBSAMEN.

Commissioner of Patents,

Washington, D. 0. 

